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2020-08-04Merge release-20200622.1-330-g0ba702bd6 (automated)gVisor bot
2020-08-04Error if dup'ing stdio FDs will clobber another FDFabricio Voznika
The loader dup's stdio FD into stable FD's starting at a fixed number. During tests, it's possible that the target FD is already in use. Added check to error early so it's easier to debug failures. Also bumped up the starting FD number to prevent collisions. PiperOrigin-RevId: 324917299
2020-08-03Merge release-20200622.1-313-gb2ae7ea1b (automated)gVisor bot
2020-08-03Plumbing context.Context to DecRef() and Release().Nayana Bidari
context is passed to DecRef() and Release() which is needed for SO_LINGER implementation. PiperOrigin-RevId: 324672584
2020-07-31Merge release-20200622.1-300-ga7d9aa6d5 (automated)gVisor bot
2020-07-30Call lseek(0, SEEK_CUR) unconditionally in runsc fsgofer's Readdir(offset=0).Jamie Liu
9P2000.L is silent as to how readdir RPCs interact with directory mutation. The most performant option is for Treaddir with offset=0 to restart iteration, avoiding needing to walk+open+clunk a new directory fid between invocations of getdents64(2), and the VFS2 gofer client assumes this is the case. Make this actually true for the runsc fsgofer. Fixes #3344, #3345, #3355 PiperOrigin-RevId: 324090384
2020-07-30Implement overlayfs_stale_read for vfs2.Jamie Liu
PiperOrigin-RevId: 324080111
2020-07-28Merge pull request #3102 from stripe:andrew/cgroup-eintrgVisor bot
PiperOrigin-RevId: 323638518
2020-07-27Clean-up bazel wrapper.Adin Scannell
The bazel server was being started as the wrong user, leading to issues where the container would suddenly exit during a build. We can also simplify the waiting logic by starting the container in two separate steps: those that must complete first, then the asynchronous bit. PiperOrigin-RevId: 323391161
2020-07-25Merge release-20200622.1-223-gd6b676ae6 (automated)gVisor bot
2020-07-25test/syscall: run each test case in a separate network namespaceAndrei Vagin
... when it is possible. The guitar gVisorKernel*Workflow-s runs test with the local execution_method. In this case, blaze runs test cases locally without sandboxes. This means that all tests run in the same network namespace. We have a few tests which use hard-coded network ports and they can fail if one of these port will be used by someone else or by another test cases. PiperOrigin-RevId: 323137254
2020-07-25Merge release-20200622.1-220-gbd97206fa (automated)gVisor bot
2020-07-24Reduce walk and open cost in fsgoferFabricio Voznika
Implement WalkGetAttr() to reuse the stat that is already needed for Walk(). In addition, cache file QID, so it doesn't need to stat the file to compute it. open(2) time improved by 10%: Baseline: 6780 ns Change: 6083 ns Also fixed file type which was not being set in all places. PiperOrigin-RevId: 323102560
2020-07-23Merge release-20200622.1-206-g5e34ee68c (automated)gVisor bot
2020-07-23Added stub FUSE filesystemRidwan Sharif
Allow FUSE filesystems to be mounted using libfuse. The appropriate flags and mount options are parsed and understood by fusefs.
2020-07-23Merge release-20200622.1-194-g384369e01 (automated)gVisor bot
2020-07-23Fix fsgofer Open() when control file is using O_PATHFabricio Voznika
Open tries to reuse the control file to save syscalls and file descriptors when opening a file. However, when the control file was opened using O_PATH (e.g. no file permission to open readonly), Open() would not check for it. PiperOrigin-RevId: 322821729
2020-07-22Merge release-20200622.1-184-g71bf90c55 (automated)gVisor bot
2020-07-22Support for receiving outbound packets in AF_PACKET.Bhasker Hariharan
Updates #173 PiperOrigin-RevId: 322665518
2020-07-15Merge release-20200622.1-166-gbdbab2702 (automated)gVisor bot
2020-07-15Merge pull request #3022 from prattmic:runsc_do_pdeathsiggVisor bot
PiperOrigin-RevId: 321449877
2020-07-15Merge release-20200622.1-164-gdb653bb34 (automated)gVisor bot
2020-07-15fdbased: Vectorized write for packet; relax writev syscall filter.Ting-Yu Wang
Now it calls pkt.Data.ToView() when writing the packet. This may require copying when the packet is large, which puts the worse case in an even worse situation. This sent out in a separate preparation change as it requires syscall filter changes. This change will be followed by the change for the adoption of the new PacketHeader API. PiperOrigin-RevId: 321447003
2020-07-15Merge release-20200622.1-160-g8939fae0a (automated)gVisor bot
2020-07-15Apply pdeathsig to gofer for runsc run/doMichael Pratt
Much like the boot process, apply pdeathsig to the gofer for cases where the sandbox lifecycle is attached to the parent (runsc run/do). This isn't strictly necessary, as the gofer normally exits once the sentry disappears, but this makes that extra reliable.
2020-07-15Merge pull request #3165 from ridwanmsharif:ridwanmsharif/fuse-off-by-defaultgVisor bot
PiperOrigin-RevId: 321411758
2020-07-14Merge release-20200622.1-153-g1bfb556cc (automated)gVisor bot
2020-07-14Prepare boot.Loader to support multi-container TTYFabricio Voznika
- Combine process creation code that is shared between root and subcontainer processes - Move root container information into a struct for clarity Updates #2714 PiperOrigin-RevId: 321204798
2020-07-13Merge pull request #2672 from amscanne:shim-integratedgVisor bot
PiperOrigin-RevId: 321053634
2020-07-09Update shim to build using bazel.Adin Scannell
The go.mod dependency tree for the shim was somehow contradictory. After resolving these issues (e.g. explicitly imported k8s 1.14, pulling a specific dbus version), and adding all dependencies, the shim can now be build as part of the regular bazel tree. As part of this process, minor cleanup was done in all the source files: headers were standardized (and include "The gVisor Authors" in addition to the "The containerd Authors" if originally derived from containerd sources), and comments were cleaned up to meet coding standards. This change makes the containerd installation dynamic, so that multiple versions can be tested, and drops the static installer for the VM image itself. This change also updates test/root/crictl_test.go and related utilities, so that the containerd tests can be run on any version (and in cases where it applies, they can be run on both v1 and v2 as parameterized tests).
2020-07-09Merge release-20200622.1-87-ge506fcd93 (automated)gVisor bot
2020-07-09Add args and netns flag to runsc specIan Lewis
Adds a netns flag to runsc spec that allows users to specify a network namespace path when creating a sample config.json file. Also, adds the ability to specify the command arguments used when running the container. This will make it easier for new users to create sample OCI bundles without having to edit the config.json by hand. PiperOrigin-RevId: 320486267
2020-07-09Gate FUSE behind a runsc flagRidwan Sharif
This change gates all FUSE commands (by gating /dev/fuse) behind a runsc flag. In order to use FUSE commands, use the --fuse flag with the --vfs2 flag. Check if FUSE is enabled by running dmesg in the sandbox.
2020-07-09Merge release-20200622.1-85-gc4815af94 (automated)gVisor bot
2020-07-08Add shared mount hints to VFS2Fabricio Voznika
Container restart test is disabled for VFS2 for now. Updates #1487 PiperOrigin-RevId: 320296401
2020-07-08Merge release-20200622.1-82-ga75d9f7be (automated)gVisor bot
2020-07-08Drop empty lineMichael Pratt
PiperOrigin-RevId: 320281516
2020-07-08Merge release-20200622.1-78-gefa2615eb (automated)gVisor bot
2020-07-07[vfs2] Remove VFS1 usage in VDSO.Ayush Ranjan
Removed VDSO dependency on VFS1. Resolves #2921 PiperOrigin-RevId: 320122176
2020-07-07Merge release-20200622.1-74-g10930189c (automated)gVisor bot
2020-07-07Fix mknod and inotify syscall testAyush Ranjan
This change fixes a few things: - creating sockets using mknod(2) is supported via vfs2 - fsgofer can create regular files via mknod(2) - mode = 0 for mknod(2) will be interpreted as regular file in vfs2 as well Updates #2923 PiperOrigin-RevId: 320074267
2020-07-01cgroup: retry file writes on EINTR errorsAndrew Dunham
2020-06-26Merge release-20200622.1-28-gcfd049da8 (automated)gVisor bot
2020-06-25Test that the fuse device can be openedRidwan Sharif
2020-06-25Moved FUSE device under the fuse directoryRidwan Sharif
2020-06-24Merge release-20200608.0-122-g58880bf55 (automated)gVisor bot
2020-06-24Port /dev/net/tun device to VFS2.Nicolas Lacasse
Updates #2912 #1035 PiperOrigin-RevId: 318162565
2020-06-24Merge release-20200608.0-120-gb070e218c (automated)gVisor bot
2020-06-24Add support for Stack level options.Bhasker Hariharan
Linux controls socket send/receive buffers using a few sysctl variables - net.core.rmem_default - net.core.rmem_max - net.core.wmem_max - net.core.wmem_default - net.ipv4.tcp_rmem - net.ipv4.tcp_wmem The first 4 control the default socket buffer sizes for all sockets raw/packet/tcp/udp and also the maximum permitted socket buffer that can be specified in setsockopt(SOL_SOCKET, SO_(RCV|SND)BUF,...). The last two control the TCP auto-tuning limits and override the default specified in rmem_default/wmem_default as well as the max limits. Netstack today only implements tcp_rmem/tcp_wmem and incorrectly uses it to limit the maximum size in setsockopt() as well as uses it for raw/udp sockets. This changelist introduces the other 4 and updates the udp/raw sockets to use the newly introduced variables. The values for min/max match the current tcp_rmem/wmem values and the default value buffers for UDP/RAW sockets is updated to match the linux value of 212KiB up from the really low current value of 32 KiB. Updates #3043 Fixes #3043 PiperOrigin-RevId: 318089805
2020-06-24Merge release-20200608.0-119-g364ac92ba (automated)gVisor bot
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